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DC Barrel Jack Adapter - Breadboard Compatible

Description: This DC power jack/connector is just like the other one that we carry except that it’s terminated with breadboard-friendly pins instead of wide solder terminals. These are also compatible with our DC wall supplies and have a 5.5mm jack, with a 2.1mm center pole diameter.

POWER_JACK_PTH will work as well, just that the pads are unnecessarily large, and the component outline isn’t quite right for this specific component. Nonetheless, I’ll submit a pull request for a lib that has this one added.

Does anyone know if these will work on a board printed by OSHPark using the correct layout, but with standard sized pin-holes instead of the slots? I have the other barrel connector with the wider leads, but just received my boards from OSHPark and I see that they just have standard holes drilled without enough room for the fat leads on the other connector.

I’m hoping that the posts on this one might fit in to the standard holes on my PCBs, but I can’t seem to figure out the dimensions for the pins on this from the drawing. Thanks in advance!

It should be - in what way is it not? (pins too big, pin spacing issue? what breadboard are you using?)

If you’re certain it’s not compatible, you may have received the wrong part (perhaps you got DC Barrel Power Jack/Connector instead, should be easy to tell!), and should get in touch with customerservice@sparkfun.com .

In the dimensional drawing there is a little circuit diagram: pin 1 (back) is the center pin, pin 2 (front) is the barrel, and pin 3 (side) is the “shunt”, which is connected to pin 2 when the plug is not inserted, and is disconnected from pin 2 by inserting the plug.

It looks like it could fit from the dimensional drawing, but some pin bending will be required. Once I get a few, I will test them in a real breadboard and find out for sure.

Update: I have them in. Power rails? Not exactly - you have to bend the pins slightly, and there could be issues if you want to use the third pin. It’s far cleaner to put it in an empty section and jump it to the rails.

Customer Reviews

4.5 out of 5

Great for breadboard work

I used one of these many times to easily power a breadboard. The only thing lacking here is the confusing circuit diagram in the datasheet. Otherwise, the product is great and fits perfectly in normal spacing breadboards.

Note about negative poles

It is worth mentioning that there is one positive and two negative poles while there is no plug plugged in.
However, when the plug is plugged in there is only one negative and one positive pole (the one on the side is not used).
Otherwise it is a very good product.

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